Sapp, R. M., Spangenburg, E. E. & Hagberg, J. M. (2018). Trends in aggressive play and refereeing among the top five European soccer leagues. Journal of Sports Sciences, 36 (12), 1346-1354. doi: 10.1080/02640414.2017.1377911
APA-Zitierstil (7. Ausg.)Sapp, R. M., Spangenburg, E. E., & Hagberg, J. M. (2018). Trends in aggressive play and refereeing among the top five European soccer leagues. Journal of Sports Sciences, 36(12), 1346-1354.
Chicago-Zitierstil (17. Ausg.)Sapp, R. M., E. E. Spangenburg, und J. M. Hagberg. "Trends in Aggressive Play and Refereeing Among the Top Five European Soccer Leagues." Journal of Sports Sciences 36, no. 12 (2018): 1346-1354.
MLA-Zitierstil (9. Ausg.)Sapp, R. M., et al. "Trends in Aggressive Play and Refereeing Among the Top Five European Soccer Leagues." Journal of Sports Sciences, vol. 36, no. 12, 2018, pp. 1346-1354.